import java.util.concurrent.atomic.AtomicInteger;

public class demo3 {

    public static AtomicInteger count=new AtomicInteger(0);

    public static void main(String[] args) throws InterruptedException {
        Thread t1=new Thread(()->{
            for (int i = 0; i < 5000; i++) {
                count.getAndIncrement();//count++

                /*
                count.incrementAndGet();//++count
                count.getAndDecrement();//count--
                count.decrementAndGet();//--count
                */
            }
        });
        Thread t2=new Thread(()->{
            for (int i = 0; i < 5000; i++) {
                count.getAndIncrement();
            }
        });
        t1.start();
        t2.start();
        t1.join();
        t2.join();
        System.out.println(count.get());
    }
}
